Bed-cushioning device for printing-presses.



S. MOB. .BED GUSHIONING DEVIGB FOR PRINTING PRESSES.

APPLICATION IILBI) JULY 3, I912. 1,104,81 9. Patented July 28, 19m

3 SHEETS-SHEET l.

THE NORRIS Pb! [:RS 00., PHOTO-LJITHDH WASHINGTON. Dv C.

S. MOE. BED GUSHIONING DEVICE FOR PRINTING PRBSSES.

APPLIOATION FILED JULY-3, 1912.

1 1 04,8 1 9. Patented July 28,1914.

3 SHEETSSHEET 2.

THE NORRIS PETERS (0. PHOTO-LITHQ. WASHINGTON. D. C.

S. MOE.

BED GUSHIONING DEVICE FOR PRINTING PRBSSES.

APPLICATION FILED JULY 3, 1912.

1,104,819. I PatentedJl 28,1914.

3 SH SSHEET 3.

U I 1' TED STATES PATENT" OFFICE.

SIVERT MOE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE MIEI-ILE PRINTINGPRESS & MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

BED-CUSHIONING DEVICE FOR PRINTING-PRESSES.

Specification of Letters Patent.

Patented July 28, 1914.

Application filed July 3, 1912. Serial No. 707,408.

have invented certain new and useful Improvements in Bed-CushioningDevices for Printing-Presses, of which the following is a specification.

This invention relates to an improved bed cushioning device for printingpresses and is particularly applicable to cylinder presses having acurved bed and in which the bed movement is along a curved or arcuatepath. In such presses dash pot cushioning devices have not beensatisfactorily employed for the reason that the piston, moving in thecurvilinear path of the bed by which it is carried, does not properlycoact with the cylinder having a rectilinear bore.

The primary object of my invention is therefore the combination with abed plate moving in a curved path, of dash pot cushioning mechanism inwhich the traveling element, whether piston or cylinder, moves in arectilinear path, and I attain this object by so mounting the piston,for instance, upon the bed as to provide for rocking and verticalmovement relative to the bed and by guiding the piston for movement withthe bed but in a straight line coinciding with the axis of thestationary cylinder. Obviously the conditions may be reversed, thecylinder being mounted for movement in alinement with the axis of astationary piston, the principle being the same although it is usuallyadvantageous from a mechanical standpoint to mount the piston upon thebed or movable member and the cylinder upon the rigid frame or othersupport.

In order that the invention may be readily understood andthe manner ofits operation made evident I have in the accompanying drawings shown byway of illustration a preferred embodiment of the same.

In these drawings, Figure 1, is a partial side elevation of a printingpress containing my invention with certain parts broken away and othersshown in sections; Fig. 2, is a vertical section on the line 2-2 of Fig.1; Fig. 3 is a horizontal transverse section on the line 3'3 of Fig. 2;Fig. 4 is a vertical longitudinal section on the line of Fig. 2; Fig. 5is a transverse vertical section on the line 5-5 of Fig. 3, and Fig. 6is a perspective detail.

Having detailed reference-to the drawings reference numeral 11designates the frame of a printing press with which is assembled theimpression cylinder 12, the bed 13, and the ordinary auxiliary partswhich form no part of the present invention and which are merelyindicated for purposes of orientation. In lithographic presses of thetype illustrated the surface of the bed 13 viewed f longitudinally iscurvilinear being formed upon the arc of a circle having comparatively avery large radius, approximately 50 feet. This bed upon which theform iscarried and which coacts with the cylinder 12 is given a longitudinalreciprocating movement by mechanism not shown, and moves in acurvilinear path upon a carriage. 14 traveling upon rolls 15 upon asuitable track 16 of the frame 11.

It is necessary that cushioning devices of some sort be employed toabsorb the momentum of the bed at the two extremes of its path where thedirection of movement is reversed and it has been customary to socushion the movement of printing beds moving in a rectilinear path byemploying the well-known dash pot mechanism. Where the movement of thebed is along a curved path, however, as in printing presses of thistype, it has not been found practicable to employ a dash pot cushioningmechanism for the reason, as stated, that the path of the piston carriedby the bed does not coincide with the bore of the cylinder, the path ofthe former being along a curved line and the bore of the latternecessarily about a rectilinear axis. I have overcome this difficulty inthe following manner.

Fixedly mounted upon the frame 11 of the press are shown the oppositelyfacing oyline ders 17 17 while the cooperating pistons 18, 18 are shownas having their piston rods 19, 19 rigidly seated at their inner ends20, 20 within the cross head 21. This cross head has extending from thetwo sides thereof arms 22, 22 which arms carry plates 23 traveling inrectilinear guide grooves 24, 24 formed in the opposite ides of theframe 11 and extending ion' iaidinany thereof, By

this guiding connection between the cross head 21 and the frame 11 thepistons 18 are at all times caused to travel'in alinement with the axesof the cylinders 17 whereby accurate registration of the piston andcylinder is secured.

In order to provide for a connection between the cross head and the bedso that there shall be no relative longitudinal movement of the two andthe cushioning action shall be transmitted from the dash pot through thecross head to the bed and yet to provide for such relative transverseand rocking movement as shall permit the cross head to travel in arectilinear path while the bed travels in a curvilinear path I provide aflexible connection between the cross head and bed as follows: The crosshead 21 is provided with a vertical slot 25 which may have vertical sidewalls 26 and is provided with concentrically curved end walls 27, 27;

ithin this slot is positioned a shoe 28 having its exterior end walls29, 29 curved to conform to the inner walls 27 of the cross head andhaving one side face cut away at 30 to provide a slot for the receptionof the lower portion of the stem 31, the upper end of which is flangedoutwardly at 32 and rigidly secured by the bolts 33 to the travelingbed.

It will be readily understood that the stem 31 is capable of verticalmovement within the shoe 28 while the shoe is capable of rocking pivotalmovement within the cross head. In the medial position of the partsindicated in Figs. 1 and 4 of the drawing the stem 31 is vertical and atright angles to the cross head and piston rods, whereas at the twoextremes of its curved path the stem will be inclined to the verticaland to the cross head, such inclination in the two directions beingrendered possible by the rocking movement of the shoe within the crosshead. In the medial position also the bed is disposed a greater distanceabove the cross head than at the two extremes of its path andconsequently as the bed and cross head travel in either direction thestem will move downwardly within the shoe, At all times, how, ever, thecross head is firmly coupled to the bed so far as concerns longitudinalmovement, the two parts traveling together as an entirety. i

The arrangement of the coupling members as shown enables the severalparts to be quickly assembled and dis-assembled, it only being necessaryto lift the stem with the bed out or the shoe or by removing the guidepla es t drop the cross head with e pi t ns rom the s e The s oe itselfs readily em ved from its ea w thin the cross. he d y rotating the samein a verti al plane thr ugh n angle of 0 degrees when itmay be t ken ut.The parts m y be reassemb ed by ersa of these operations, it b ing notedthat there are no fastening devices connecting these coupling partstogether.

While 1 have shown and described with a considerable degree ofparticularity the constructional features of one form of the inventionit will be obvious that many mechanical changes could be made withoutsacrificing the inherent advantages of the invention and withoutdeparting from the scope of the invention as set forth in the claims.

I claim:

1. The combination, with a stationary member, and a reciprocatory membermounted thereon to travel in an arcuate path, of dash pot cushioningmechanism, one of the dash pot elements rigidly mounted on thestationary member with its axis at a slight angle to the path of thereciprocating member, the other dash pot element attached to and movingin the same general direction as the reciprocatory member, and means toguide the movably mounted element in a path parallel to a chord of thearc traversed by the reciprocating member and in aline ment with thefixed element, substantially as described.

2. The combination, with a stationary member, and areciprocatory membermounted thereon to travel in an arcuate path, of dash pot cushioningmechanism comprising a cylinder element rigidly mounted upon thestationary member and a piston element attached to and moving in thesame general direction as the reciprocatory member, and means to guidethe piston element in alinement with the axis of the cylinder element ina path corresponding to a chord of the arc traversed by thereciprocating member and substantially as described.

3. The combination, with a stationary member, and a reciprocatory membermounted thereon to travel in a curvilinear path, of dashpot cushioningmechanism comprising a cylinder and piston elements, one of sa delements rigidly mounted on the stationary member and the other elementcarried by the reciprocatory member, a connec tion between the lastnamed element and the reciprocatory element to permit of trans verserelative movement, and means to guide the movable element in arectilinear path in alineinent with the axis of the stationary element,substantially as described.

' t. The combination, with a stationary member, and a reciprocatorymember mounted thereon to travel in a curvilinear path, of dash potcushioning mechanism comprising a cylinder element rigidly mounted onthe stationary member a d a piston element carried by the re iprooa orymember, a connection between the piston element a d the reciprocatorymember to permit of rocking and transverse relative movement, and

means to guide the piston element in a rectilinear path in alinementwith the axis of the cylinder element, substantially as described.

5. In a printing press, the combination, with the frame and areciprocatory bed traveling longitudinally thereof in a curvilinearpath, of cushioning mechanism comprising dash pot elements carried oneby the frame and the other by the bed, one of the dash pot elementsrigidly mounted, the other dash pot element mounted to provide forlateral and rocking movement, and means to guide the reciprocatingelement along a rectilinear path in alinement with the stationaryelement, substantially as described.

6. In a printing press, the combination, with a frame, and areciprocatory bed traveling longitudinally thereon in a curvilinearpath, of cushioning mechanism comprising a dash pot, one of the dash potelements rigidly mounted on the frame, the other dash pot elementcarried by the bed and mounted for lateral and rocking movement thereon,and 'means to guide the movable element in a rectilinear path inalinement with the sta tionary element, substantially as described.

7. In a printing press, the combination, with a frame and reciprocatorybed traveling longitudinally thereof in a curvilinear path, ofcushioning mechanism comprising a dash pot, the cylinder rigidly mountedon the frame, the piston carried by the bed and mounted for lateral androcking movement thereon, and means to guide the piston in a rectilinearpath in alinement with the cylinder, substantially as described.

8. In a printing press, the combination, with a frame, and reciprocatorybed traveling longitudinally thereon in a curvilinear path of a dash potcushionin mechanism comprising a pair of cylinders xed in opposition toeach other near the ends of the frame, a pair of pistons mounted forreciprocatory rectilinear movement between and in alinement with thecylinders, and a connection between the pistons and reciprocatory bed,said connection providing for lateral and rocking movement of the bedrelative to the pistons, substantially as described.

9. In a printing press, the combination, with a frame, and reciprocatorybed traveling longitudinally thereon in a curvilinear path, of a dashpot cushioning mechanism comprising a pair of cylinders fixed inopposition to each other near the ends of the frame, a pair of pistonsmounted for reciprocatory rectilinear movement between and in alinementwith the cylinders, a cross head connecting the pistons, said cross headhaving a transverse aperture, and a stem rigidly affixed to the bed andextending laterally therefrom into the aperture of the cross head,substantially as described.

10. In a, printing press, the combination, with a frame, andreciprocatory bed traveling longitudinally thereon in a curvilinearpath, of a dash pot cushioning mechanism comprising a pair of cylindersfixed in opposition to each other near theends of the frame, a pair ofpistons mounted for'reciprocatory rectilinear movement between and inalinement with the cylinders, a cross head rigidly connecting thepistons, said cross head having a transverse aperture withconcentrically curved walls, a shoe having a central slot andconcentricallycurved outer sides fitting within the aperture, and a stemafiixed to the bed and extending laterally therefrom into the slot ofthe shoe within the aperture, substantially as described. I

11. In a printing press, the combination, with a frame, andreciprocatory bed traveling longitudinally thereon in a curvilinearpath, of a dash pot cushioning mechanism comprising a pair of cylindersfixed in opposition to each other near the ends of the frame, a pair ofpistons, mounted between the opposed cylinders, a cross head rigidlyconnecting the pistons and having arms extending laterally therefrom andguided within rectilinear grooves formed in the frame parallel to theaxes of the cylinders, said cross head having a transverse aperture withconcentrically curved walls, a shoe having a central slot andconcentrically curved outer sides fitting within the aperture, and astem rigidly aflixed to the bed and extending laterally therefrom intothe slot of'the shoe within the aperture, substantially as described.

SIVERT MOE.

Witnesses C. I. MANSUR, CHAS. HIoKMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D, O.

